I use these extensions, don't have adds or privacy trackers.
https://github.com/gorhill/uBlock#ublock-origin (pro tip: add this list https://github.com/notracking/hosts-
blocklists/ (if you can't use DNS blocking))
https://www.mrfdev.com/enhancer-for-youtube (normalize volume and video quality automatically), and allows to "Overlay ads (images, text) and in-stream video ads (displayed before, during, or after the main video) can be automatically blocked or skipped at any time even if they are non-skippable. It is possible to whitelist channels to support your favorite creators so they can earn revenues from ads and so can continue to produce videos you like."